Multiple Users

I have a simple insert statement to be executed in the server,
the scenario is like this couple of fields, all are textboxes user clicking on the save button , the query is executed with the values collected from the screen.
Everything is ok with single user but gives anomalous result on multiple users

I think you should give more details to throw some light in this issue. To achieve muliple users you need thread safe db,threadsafe components make sure you have those things.
note : threadsafe db denotes it support concurrency
threadsafe components : server supports multiple users if web,servlet if used is thread safe...